On a warm fall morning, Dora stood near a food stand holding a plate of tacos as she stared at her husband and son standing in a long line of Mexican nationals longing to belong. "We like it here in the United States," Dora said as she ate a steaming taco. "My family and I want to stay here." Dora was one of roughly 150 Mexican nationals who anxiously waited Wednesday for a chance to get a matricula consular card, or identification card, at Camacho Auto Sales on Sierra Highway and Avenue J. A matricula consular card is a Mexican-government-issued...